Self-locking nut.



No. 800,190. PATENTED SEPT. 26, 1905-.

D 0 WARD SELF LOOKING NUT. APPLICATION rum) xov. 28-19%.

' UNITED STATES PATENT OFFICE.

DANIEL O. WARD, OF OAK PARK, ILLINOIS, ASSIGNOR TO GRIP NUT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SELF-LOCKING NUT.

Specification of Letters Patent.

Patented Sept. 26, 1905. i

- 7 Application filed November 28, 1904. Serial No. 234,463.

zen of the United States of America, residing pleted nut ready for use.

at Oak Park, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Self-Locking Nuts, of which the following is a description.

My invention relates to that class of nuts provided with means to prevent their accidental movement upon a bolt when in use.

The object of my invention is to produce a simple, durable, and efficient device of the kind described and one which may be repeatedly screwed down upon a bolt without dam-i age to either the bolt or nut.

To this end my improvement consists in the: novel construction and arrangement of parts herein shown and descrlbed, and more particularly pointed out in the claims.

In the accompanying drawings, wherein like or similar reference characters indicate like or corresponding parts, Figure 1 is a perspective view of the preferred form of "my nut. Fig. 2 is a sectiontaken on line 22 of Fig. 1.

Fig. 3 is a section taken on line 3 3 of Fig. 1,

showing a nut threaded and ready for the final deflecting. Fig. 4 is a section similar to that shown in Fig. 3, showing a portion of a comthe opposite face, so that the thickness of the metal in the nut will be substantially uniform.

The groove 2 may be of any preferred form or arrangement, so that a part of the threaded portion of the nut upon opposite sides of the opening 4 is cut away, leaving a series of short orinterrupted threads 5 5 upon opposite sides of the opening between the parts cut away.

Where a ridge 3 is formed upon one face of Fig. 5 is a'perspec- To cause the nut to look when screwed upon a bolt, the threads 6 above the groove'2 are slightly deflected, as shown in Fig. 4, the dotted lines at 7 showing the original plane of the threads. This deflecting or bending of the threads at 6 6 may be accomplished in any preferred manner, and it is immaterial whether the threads be bent or deflected out of their normal plane toward or away from the groove 2 or whether the parts upon the opposite sides of the opening l'are bent in the same direction, in this construction it being necessary that the deflection of the threads be made before the nut is applied to the boltin other words, are given a normal deflectionthe object being to deflect a part of the threads out of their normal plane at one or more, points, so that thethreads upon the bolt cooperating with the nut will be gripped by the normal and deflected threads with sufficient friction" deflected part is reached, when there is a suflicient engagement betweenthe bolt and the short normal threads to permit of the convenient use of a wrench to further tighten the nut.

In Fig. 5 a nut is shown with the groove 2 and ridge 3 at one side only of the opening 4:; but obviously'the operation is in all respects similar to that where the groove and ridge eX- tend upon both sides. In some cases where it is intended that a nut is to be frequently adjusted it is evident that the deflected portion of the threads may become worn and gradually lose its locking effect. Under such circumstances, if desired, the threads at one side of the opening only may be deflected, the opposite side being left normal until such time as parting from the spirit of my invention. Hence 1 I do not wish to be understood as limiting myself to the exact form and construction shown.

What I claim as new, and desire to secure by Letters Patent, is

1. A device of the kind described, comprising a screw threaded solid nut having its threads interrupted adjacent one of its faces and normally deflected from their regular plane longitudinally of the threaded opening along one or more lines extending therethrough.

2. A device of the kind described, comprising a screw threaded solid nut having its threads interrupted adjacent one of its faces, and its threads deflected from their normal plane along one or more lines extending through said nut at said points of interruption.

3. A device of the kind described, comprising a screw-threaded nut, provided with one or more grooves formed in one faceextending from the opening to the margin, the threads of said nut not interrupted by said grooves being deflected from their normal plane at any of said grooves.

4:. A device of the kind described, comprising a screw-threaded nut provided with a groove in one face extending across the opening, and having its threads that are not interrupted by said groove permanently deflected from their normal plane at said groove.

5. A device of the kind described, comprising a screw-threaded nut provided with one or more grooves formed in one face extending from the opening to the margin, and corresponding ridges formed on the opposite face, the threads being permanently deflected from their normal plane at said grooves.

6. A device of the kind described, comprising a screw-threaded nut provided with a groove formed in one face extending across the opening, and a corresponding ridge formed in the opposite face, the threads of said nut being permanently deflected from their normal plane at said groove.

7. A device of the kind described, comprising a screw-threaded nut provided with a plurality of short threads formed upon substantially opposite sides of the opening and adjacent both faces of said nut, the short threads near one face being positioned at substantially right angles to the short threads near the opposite face, a part of said short threads at one face being deflected from their normal plane.

8. A metal nut, comprising a curved plate provided with a screw-tlu'ezuled central ori lice forming a combination of short and long threads, said plate after the scrmr-threads are out being set to throw part of said threads slightly out of their normal plane, whereby a part of the threads are left in their normal planes to mount the bolt and certain other threads are set to partially impinge upon the bolt-threads.

9. A device of the kind described, con1prising a screw-threaded nut provided \vi th a combination of short and long threads, said long threads being formed upon the central portion of said nut, and said short threads being formed upon each side thereof, near each face of said nut, and upon opposite sides of the threaded opening, the short threads near one face of said nut being at substantially right angles to the short threads near the opposite face, the short threads near one face being slightly curved from their normal plane.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

DANIEL O. WAhl).

Witnesses:

RoY W. HILL, CHARLES I. Conn. 

